T, I guess anything is possible. Spirits can be restless and some cultures believe that people who have just died are still unaware that they are dead and return home like normal. And when they start talking to people and get no response, they then realise they are dead. Bruce Willis in The Sixth Sense comes to mind.

Foong, there's a possibility that someone was pacing outside and the shadow got captured when the camera crew happened to be shooting the aisle. Who knows..

I thought of that too, that MJ faked his own death. In fact, I was hoping that memorial service was a show and that MJ would pop up from his casket and do a performance. I'm sure I'm not alone. I think he has truly passed on and that is such a shame, at his age, his young children. My heart goes out to them. Well, everything happens for a reason. May he rest in peace.